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Note 8 - Leases - Lease Obligations, Maturity (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
2019 $ 3,700,000  
2020 8,259,000  
2021 7,508,000  
2022 7,093,000  
2023 7,229,000  
Thereafter 25,490,000  
Total minimum payments required 59,279,000  
Less: implied interest 8,381,000  
Operating lease liability $ 50,898,000 $ 0